The summer interns at Microsoft got together (with some employees, 150 people in all) to make a Broadway-style musical about the company. These computer geeks are talented! Sure, a lot of it is high praise for Microsoft, but there's some humor involved, too, because no one should be above poking fun at themselves... or their workplace. Read more about the project at Gizmodo.
I don't think Amazon warehouses have interns - but if they do, they probably won't make this sort of videos ;)